Are you using HipChat Server or Data Center? If so you can follow the instructions on this page to decrypt and expand the export:
If you're a *.hipchat.com (Cloud) user, you'll have to contact support to be able to obtain 1:1 chat data:
Earlier this year we made the difficult decision to discontinue our team messaging tools, Stride and Hipchat. The end of life date for Stride and Hipchat Cloud is quickly approaching - February 15, 2...
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